Dual Concentric Rotary Attenuators

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Dual Concentric Rotary Attenuators

The RA series dual concentric attenuators furnish high dynamic range and small step size in a single, ruggedized assembly. The outer control knob steps either in 1 dB or 10 dB increments while the inner knob clicks in either 0.1 dB or 1 dB steps, depending on the model selected. The units are ideal for panel, chassis, or bench applications where two or three separate attenuators would be prohibitive due to the available space.

Specifications
	RSA-3550D	RSA-35110D
FREQUENCY RANGE	DC to 3 GHZ	DC to 3 GHZ
IMPEDANCE	50 Ohms	50 Ohms
ATTENUATION	0 - 50 by 1 dB	0 - 110 by 1 dB
AVERAGE POWER	2 Watts (25 Degrees C)	2 Watts (25 Degrees C)
SWITCHING LIFE	200,000 Steps Minimum	200,000 Steps Minimum
ROTATION	Clockwise for increasing attenuation in 30 degree indexing	Clockwise for increasing attenuation in 30 degree indexing
CONNECTORS	Female: SMA	Female: SMA
HOUSING	Aluminum and Zinc	Aluminum and Zinc
KNOBS	Knobs are included with every attenuator	Knobs are included with every attenuator
INSERTION LOSS	DC - 1.0 GHz 0.6 dB max 1.0 - 2.0 GHz 1.0 dB max 2.0 - 3.0 GHz 1.5 dB max	DC - 1.0 GHz 0.6 dB max 1.0 - 2.0 GHz 1.0 dB max 2.0 - 3.0 GHz 1.5 dB max
ACCURACY	DC - 1.0 GHz +/-0.25 dB or 1%* 1.0 - 2.0 GHz +/-0.35 dB or 2%* 2.0 - 3.0 GHz +/- 0.5 dB or 3 %* *Whichever is greater	DC - 1.0 GHz +/-0.25 dB or 1.5%* 1.0 - 2.0 GHz +/-0.35 dB or 2%* 2.0 - 3.0 GHz +/- 0.5 dB or 3%* Whichever is greater
VSWR RETURN LOSS	FREQUENCY RANGE VSWR DC -1.0 GHz 1.3:1 max 17.7 dB min 1.0-2.0 GHz 1.4:1 max 15.5 dB min 2.0-3.0 GHz 1.5:1 max 14.0 dB min	FREQUENCY RANGE VSWR DC -1.0 GHz 1.3:1 max 17.7 dB min 1.0-2.0 GHz 1.4:1 max 15.5 dB min 2.0-3.0 GHz 1.5:1 max 14.0 dB min